Unresolvable Identifier

arXiv:2604.20062 · detector doi_compliance · cross_source · 2026-05-20 02:21:25.427240+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1038/s41598-025-06539-z;subjmeta' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.

Paper page Integrity report arXiv Try DOI

Evidence text

B. Bhasker et al., “Blockchain framework with IoT device using federated learning for sustainable healthcare systems,” Sci Rep, vol. 15, no. 1, pp. 1–20, Dec. 2025, doi: 10.1038/S41598-025-06539-Z;SUBJMETA

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1038/s41598-025-06539-z;subjmeta",
  "raw_excerpt": "B. Bhasker et al., \u201cBlockchain framework with IoT device using federated learning for sustainable healthcare systems,\u201d Sci Rep, vol. 15, no. 1, pp. 1\u201320, Dec. 2025, doi: 10.1038/S41598-025-06539-Z;SUBJMETA",
  "ref_index": 2,
  "verdict_class": "cross_source"
}